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Dr. Coates is a veterinarian based in the other “Sunshine State” – that's Colorado to the rest of you – where she lives and plays with a varied range of animals. She shares her professional and personal experiences, Monday through Friday, here on petMD's blog, the Fully Vetted. Log in for your daily dose of her insight and wisdom.

 

Drug Labeling Blues: How Far Should Veterinarians Go to Ensure Their Patients Are Being Dosed Correctly?

April 28, 2011 / (20) comments


Last year I experienced an unfortunate run-in with the kind of drug labeling direction pitfall that can happen to anyone: A client misread a label and overdosed her dog.

 

It was all quite innocent, really. I prescribed a common antibiotic drug for pets who suffer diarrhea complicated by bacterial overgrowths (and possibly by unseen parasites, too). But my client misread the labeling instructions and double-dosed her dog. Yeah … it happens.

Now this wouldn’t be a big deal in most cases. Problem was, Missy died. And the vet who examined her right after she died said she might’ve been overdosed with medication. Which, of course, brought the problem to lay right back in my lap — as you’d think it probably should, if (1) I’d actually recommended the dose Missy’s owner was administering, and (2) Missy’d actually succumbed to anything other than what an 18-year-old dog with end stage renal failure might reasonably be expected to. (Even veterinarians can overstate the cause of a dog’s death from time to time.)

Yes, Missy was on her last legs, God bless her. But there’s no doubting the reality: Missy’s owner was angry, thinking I’d overdosed her to death.

Luckily, I had the prescription label I’d written into my medical records and printed onto the drug label stored in the hospital computer’s medical records system. There was no doubting it: If Missy was overdosed to death (and I doubt it was anything less than her end-stage disease that did her in) it was her owner’s doing … not mine.

Still, that got me to thinking … how many owners simply misread their pets’ drug label instructions?

The subject was still percolating in my brain when I read yesterday’s Wall Street Journal article titled, "'Use Only as Directed' Isn't Easy."

Though the piece didn’t detail the exploits of wayward pet owners whose interpretation of common English isn’t always what it should be, it did delve into the secret life of cryptic labeling instructions that have a way of confusing anyone who might reasonably be expected to find their way around a drug label.

Here’s an excerpt for your infotainment:

Currently, consumers may receive as many as three different types of drug pamphlets with their prescriptions: package inserts written by the manufacturer and approved by the FDA, medication guides for certain classes of drugs and products required by the FDA, and consumer medical information provided by various third-party companies. However, recent studies by the FDA have shown that the information offered is not consistently understandable — and sometimes even conflicting or inaccurate.

Medication mishaps often happen in the hospital, due to clinician error and unexpected allergies or reactions. According to the Agency for Healthcare Research and Quality, the number of people treated in U.S. hospitals for illnesses and injuries from taking medications jumped 52% to 1.9 million between 2004 and 2008, the latest year available, including patients admitted from the emergency room. More than half of the increase was due to corticosteroids, blood thinners, and sedatives and hypnotics.

Another 838,000 patients were also treated and released from the ER with problems related to those and other medications, including painkillers, antibiotics, cardiovascular drugs, insulin and other hormones used to treat common diseases such as asthma, arthritis and ulcerative colitis. FDA officials say inadvertent errors made by patients who misunderstand information are causing significant harm. One reason cited is low literacy skills. A study in 2006 showed that of 70% of patients with low literacy who could correctly state the instructions "take two tablets by mouth twice daily," only 34% could then demonstrate the number to be taken daily.

Wow. That surely goes a long way towards explaining how a quarter pill twice a day could get translated into half a pill every twelve hours. Math is, after all, a skill many of us take for granted.

Should I, as a veterinarian, be reasonably expected to take more care when counseling my clients, seeing as when reading comprehension is an issue? Well … of course. And so I do, repeating directions in Spanish or Portuguese when necessary and even writing the prescription information in two languages if it seems prudent (and it often does here in South Florida). But how much explaining is reasonably considered adequate? And how far should a veterinarian go to ensure meds are being adequately allotted?

 

 

Dr. Patty Khuly

 

 

Pic of the day: Dog Meds by katesheets

 

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COMMENTS (20)
1
Medication Directions
by on 04/28/2011 02:14am

I used to have a vet who routinely would, if a half-pill or quarter pill was prescribed, break it in front of me and put the pieces in the bottle, so that I would have a visual of how much medication was needed.

Since he also knew that I was competent to dose my dogs accurately, administer sub-q fluids, give IM injections, flush wounds etc...I don't think I was getting special treatment. It was just his habit to demonstrate, or have the tech demonstrate, the actual dose.

It was a very helpful practice. Sometimes there's a lot to remember when you're leaving the vet's office - especially when the pet is gravely ill, and your mind shut down when you heard the bad news....

2
Directions
by on 04/28/2011 05:35am

I always repeat the directions out loud when they're given to me at the vet's office, to make sure I understand them. It might annoy the vet and/or vet techs, but I want to make sure I understand the directions. Repeating the directions out loud also gives the vet and/or techs another chance to focus on the directions to make sure THEY'VE got them correct. I'd feel awful if I misunderstood the directions and harmed my dogs because I gave them the wrong amount of a drug or performed a procedure wrong.

3
Vet mistakes
by on 04/28/2011 06:34am

I have been on the receiving end of veterinarian and their staff's mistakes in situations like this more than one time.
Once, I got home and realized that what was printed on the bottle definitely didn't match what the vet had said in the office. I looked up the package insert for the medication online, then called the office to verify. What they'd told me, NOT what was on the bottle, ended up being correct.
I now routinely look up package inserts and dosing information online before I give ANY meds that my vet has prescribed. I know mistakes happen, but after this particular mistake happened more than once at my former vet, I decided it was time to find a new vet. It's unacceptable. If I wasn't a completely anal person, my dog would have been very sick and/or dead. Well, she is dead now, but not from that. :)

4
Aloud!
by on 04/28/2011 07:03am

I agree that either the vet or the client repeating the instructions aloud would be most helpful for a lot of clients.

The commenters on this forum are the type that would double check in some fashion (like the previous poster). Some go so far as to double check the actual prescription in a drug handbook.

Unfortunately many people aren't so careful. If they don't quite understand the instructions, they guess.

Should instructions be drilled down to the simplest possible level? Instead of "two pills twice a day" should the instructions be "take two pills in the morning and two pills in the evening"?

by on 04/28/2011 07:33am

I sometimes wonder if I should write "every 12 hours" vs. "twice daily" or "two times a day" routinely. I do this only when I have any doubts about the client.

Re: drug manuals... not always accurate, and that's an understatement. I use them as a guideline, but if it's a drug with which I am not familiar at all, I also double check with a colleague.

Same goes for label doses, BTW. The most egregious example is an OTC medication called Ulcergard which is virtually identical to the prescription medication Gastrogard. A tube of Ulcergard contains four doses, but that's based on a standard (1000-1200 lb) horse. Not so helpful for my clients who own drafts or ponies, and ineffective for the actual treatment of ulcers (vs. prophylaxis).

I always review the medication dosage with the client, write it out clearly on the label, and write out the dosage in the notes on the client's receipt. Sometimes I'll comment to add emphasis: "it's a tiny pill - isn't that interesting?" (example: dexamethasone) or "that's a lot of pills; let me know if he isn't eating them" (example: doxycycline).

by on 04/28/2011 12:09pm

I think "two pills in the morning and two pills in the evening" is a LOT clearer than "two pills twice a day" - which could be interpreted as "two pills around 10 AM and two pills around 5 PM"....a lot of folks don't understand why it's important to space dosing to keep blood levels of medication steady....

by on 04/28/2011 12:18pm

You're right, of course, but reality says that my patients are going to get their meds when the barn feeds: around 7-8AM in the morning, and around 4-5PM in the evening.

by on 04/28/2011 01:52pm

Right, I get the barn problem. Still, even 7-4 is better than 10-5, which is what I have seen happen in some households. Oh, yeah, I'm getting my second cup of coffee, maybe I should dose the puppy! ;) At least farm folks are typically on a routine....

by on 04/28/2011 02:47pm

Most of my clients aren't really "farm folks"; they're horse owners. There is a big difference, especially when the client boards the horse and does not see it daily, let alone twice a day at 12 hour intervals. Most barns won't alter their schedules for one horse because meds are given with food and horses are fed at set times based on barn staff hours. Thus, twice a day sometimes = 8AM/4PM. C'est la vie.

Overall, my clients do best with meds regimens when I explain "optimal" vs. "realistic (and satisfactory)". Of course, the occasional client ignores all recommendations, as in the situation Dr. Khuly described.

Most clients want to do their best, and do, with a little encouragement. I try to set clients up for success. Perfection is the enemy of good. :-)

by on 04/28/2011 04:35pm

"Perfection is the enemy of good." I like this quote...

by on 04/28/2011 04:40pm

Not original... paraphrase of Voltaire. :-)

by on 04/28/2011 06:13pm

But then there's Rumi's take on it:
There is no worse sickness for the soul, than this pretense of perfection.

5
by on 04/28/2011 08:07am

Working emergency, I had at least four or five cases where the owners prepared their own and their pets' medications at the same time... and then the owner took the dog's meds and gave the pet their human meds. Those are interesting cases to try and figure out!

6
Labeling
by on 04/28/2011 08:53am

When my dogs are not well, I panic. BUT, I panic inside. The vet would never know how worried I am. Consequently, I remember nothing that the vet told me. I've also tried to understand labels written by almost illiterate office staff. That's a real exercise.
Considering it is medication for (often) a very small body, it's very important that it be administered correctly. What to do....????
Have you noticed the instructions on a package of cookie mix? Pictures of 1 egg, 1 stick of butter, 1 tablespoon and a bottle of vegetable oil. Then only 3 sentences or 2-sentence paragraphs of directions: Preheat oven to 375. Mix ingredients. Do not melt butter. Place on ungreased cookie sheet on middle shelf of oven 5-8 minutes.
Maybe a label with boxes to check beside pictures of 1/4, 1/2, 1 pill and a clock showing each time of day. Of course a computer program to do this would be needed. There's a business for someone!
Maybe you could print a section on your invoice that showed these pictures and clocks. You could circle the size pill and draw the hands on the clock. Just a little clip art, and you've got it!
It's very sad that our country is so illiterate, but decades ago, the average reading level was 8th grade and newspapers wrote to that level. I hate to think what it is today.....

by on 04/29/2011 06:23am

I really like this idea!
But in reality, it probably wouldn't happen. I've yet to even get the correct weight of the pet the day of the exam on the invoice, even though there's a field for it.

My gripe is the vet covering up all the info on the box or small tube with the prescription label. Sometimes you can't even tell what the med IS because it's all covered up. And when it's that small, instructions are usually grossly abbreviated.

7
Mistakes Happen
by on 04/28/2011 01:27pm

More than I would like to remember; Doctors's are Human' no one, knows it all, This goes for Pet Parents too.....Many years ago Our Baby Boy was sick, took him to his Doctor, what his Doctor ordered for Him was right, the Pharmacy give the wrong medication, Thank God, I always check meds, before I give them, This Med. could have Killed my Baby. I went back to the Pharmacy, show him. the young man broke down and cried, No I did not bring charges and cost him his job. He gave me his word, this would, never happen agan. I beleve is; He without sin throw the 1st stone.

8
Take the extra time
by on 04/28/2011 02:51pm

I've had two kinds of errors by the vet office - wrong number of pills in the bottle and instructions about refilling not given.

The first error, I noticed as the front desk staff handed the bottle to me and one of the assistants suggested that maybe I was supposed to break them in half. That was the most upsetting part of the whole situation - sure, mistakes happen but if you're not the vet you shouldn't be making any such suggestions. I insisted he ask the vet and of course the vet corrected the situation, but what if I had gone along with what the assistant told me?

The other situation happened when one vet prescribed the meds but another vet filled it and didn't note on the label or orally that it was to be refilled in 15 days. Something was lost in the communication from one vet to the other (the one who saw my pet was not there the day the culture came back indicating what abx we needed so it was probably done by phone.)

And then there are the mistakes I make on top of everything else!

One vet we go to has everything printed on a patient instruction sheet - what the diagnosis was, the treatment they did during the visit, everything I need to do (including medications, restricted activity, medicated baths etc.), what problems to watch for and when we need to come back for a recheck. I love those info sheets and refer to them any time I'm confused. Saves a lot of phone calls too!

9
Dosing Directions
by on 04/28/2011 03:20pm

We had an adopter whose dog had possibly injured a disk. They called us because he wasn't getting better.

"We give him a pill whenever he feels bad."

What are you giving him? "Prednisone".

What does the label on the pill bottle say?
"Give as directed."

No doctor or vet should EVER allow a medication label to be typed up: GIVE AS DIRECTED!

These people were giving prednisone like aspirin: whenever they thought the dog was feeling bad! When asked what the vet told them, they couldn't remember only that it was supposed to help with the pain.

10
Check, check and double
by on 05/16/2011 06:03pm

Your post is about owners mis-dosing. But you know -- I'm sure you must -- that labelling and dosing errors happen all the time on the veterinary side of the counter. (It happens at pharmacies too, that fill RXs for our pets).

Because of my ** bad ** experiences with vet medicine, I've become pretty vigilant, even with our current vets who I think must be about as good as it gets -- even so, I don't let down my guard. I double-check all their doses, make sure they make sense. Go to the internet and look up dosing and make sure it makes sense.

Recently, we thought there was a giardia outbreak at my house. I was advised to treat BOTH the clearly ill (2 of 5 cats) as well as the asymptomatic. All cats are 8-12 pounds. The three asymptomatic cats are 9-ish pounds.

One of my symptomatic cats had gotten her RX first. I was already giving her the meds before going back to pick up a package for the asymptomatic cats.

I was thorougly confused, reading the package instructions 3 times, realizing that they instructed me to dose the 9 pound cats at TWICE the dose of the 8 pound cat. That didn't make sense to me.

I called the hospital. Got transferred to the vet tech. Instead of checking anything, the vet tech tried to put me off with the old "I'm SURE there was a REASON the doctor instructed you to do that. It MUST be right." But I was persistent in my need to get clarity, so she agreed to get a message to the vet and call me back with her response.

On the return call, the tech acknowledged that the dosing instructions were wrong on the second package, and I should give hte same dose as to the first cat (half what the package said).

She was quick to add that it wouldn't have done any harm had I given the [over]dose as instructed, since panacure, the drug in question, has a wide margin of safety.

All the same, it could have been ANY drug.

One without a wide margin of safety.

So, I'd say what you do is:

Check and double check the actual package dosing instructions.

Instruct your staff to make sure that sometimes your business DOES make dosing mistakes and if a client questions a dose, don't try to get them off the phone without answering the question. Really double check.

There was no harm done in THIS instance with my pets, and I still see these people. Those mistakes do happen.

But the next time you rue we mistrustful, internet-checking clients, remember that sometimes we DO catch your mistakes.

(And yeh, I didn't feel bad saying "no" to a shot of convenia on a recent visit, either.)

It's not even mistrust as much as it is being aware that ultimately, the buck is going to stop with me. I am really gonna be very upset with myself if ever again I fail to double check a vet's RX or plan for my pet and something bad happens.

So, maybe you can print out the equivalent of a package insert with the RXs and make sure it has the correct dosing by species/weight on it, maybe even with the pet's weight printed. That way not ONLY do the owners have something to read that emphasizes to them the correct dose and what might happen if they give too much/little, but ALSO they can help you double (or triple) check yourselves.

11
Drug labeling
by on 06/28/2011 02:49am

Drug labeling is a very important thing that we must know.Narcotic marking regulations are fairly elaborate, but generic types of brand-name narcotics will no longer have to follow the same caution label regulations. The Supreme Court recently decided in support of generic drug corporations in a recent court lawsuit. Brand-name narcotic makers need to disclose any and all side effects or adverse reactions on warning labels, but generic narcotic companies will no longer have to stick to exactly the same standard. I found this here: Drug label laws do not apply to generic prescriptions.

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About fully vetted

Patty Khuly, VMD, MBA

Photo of Dr Khuly

Dr. Khuly is a former petMD blogger and small animal veterinarian in Miami, Florida, where she practices medicine at Sunset Animal Clinic and serves on the board of the South Florida Veterinary Medical Association. She is a graduate of Wellesley College, the University of Pennsylvania School of Veterinary Medicine, and The Wharton School of Business.

As a significant sideline, she writes...a lot. She authors pet health columns for USA Today, The Miami Herald and Vetstreet. She also writes a popular monthly column for Veterinary Practice News and serves as regular contributor to Veterinary Economics, The Bark, and the Veterinary News Network.

Dr. Khuly lives in South Miami with her brood of hens, goats, dogs, cats...and humans.

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